The cause of the tangible reality of surrender is expounded in the
Standard Codes of Religion (Smrti) –

“The syllable ma means ‘self-asserting ego’ (the misconception
of considering oneself to be a ‘doer’), and the syllable na indicates its
prevention. Thus, the act of offering obeisances (namah) nullifies the
offerer’s independence. The soul is naturally subordinate to the
Almighty, his intrinsic nature and innate function being servitude to
the Supreme Lord. Therefore, all actions performed thinking, ‘I am
the doer,’ should be utterly abandoned.” — Padma Purana